Electrochemical structure

Details Electrochemical structure Electrochemical structure

H - Electricity

01

M

H01M 4/62 (2006.01) H01M 4/88 (2006.01) H01M 8/04 (2006.01) H01M 8/10 (2006.01) H01M 4/86 (2006.01) H01M 4/90 (2006.01) H01M 4/92 (2006.01)

Patent

CA 2414356

A novel anode structure for making a proton exchange membrane fuel cell (PEMFC) tolerant to incidences of cell reversal, said anode structure comprising an electrocatalyst layer wherein said electrocatalyst layer comprises at least one electrocatalyst and at least one proton conducting polymer, characterised in that one or more water retaining material(s) are embedded within the electrocatalyst layer, and a process for the preparation thereof is disclosed. Also disclosed is a novel electrocatalyst ink for use in the preparation of the novel anode structure.

L'invention concerne une structure d'anode rendant une pile à combustible à membrane échangeuse de protons (PEMFC) tolérante aux incidences de l'inversion de tension. Ladite structure comprend une couche électrocatalytique dotée d'au moins un électrocatalyseur et d'au moins un polymère conducteur de protons. Un ou plusieurs matériaux retenant l'eau sont imbriqués dans la couche électrocatalytique. L'invention concerne aussi un procédé d'élaboration correspondant. L'invention concerne enfin une encre électrocatalytique destinée à être utilisée dans l'élaboration de la structure.

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